As you may know, our bodies make vitamin D when our skin is exposed to the sun. If you’re very, very careful, you might be able to get most of your vitamin D via sun exposure, as long as you don’t overdo it, since too much sun can lead to skin cancer.Michael Holick, M.D., Ph.D.
of Boston University, a leading expert on vitamin D, says the skin is so efficient at making “D” that exposure to the sun in a bathing suit for the amount of sun needed to turn skin red (typically no more than 15-20 minutes on Cape Cod in June or July at noon) is equivalent to taking 20,000 IU of vitamin D orally! Spending 15 to 20 minutes in the sun a few times a week in the summer can bump up your vitamin D levels. But don’t forget to coat yourself with sunscreen after that. Read More